Why can't I select my table with Spring Boot?

I’m working in an API that access the database to return a String based on an input. I’m using Spring Boot with JDBC to connect a MySQL server at localhost.

I’ve already tested the app in several different systems and it works fine, but when I test it at my droplet the query returns nothing.

I am certain that it connects and there the database is populated. If I use the same query at the mysql terminal it returns the data.

The app returns java.lang.ArrayIndexOutOfBoundsException: 2553 exception when it tries to select the table and prints

 MySQL data: []

2017-11-16 14:06:56.321  INFO 21565 --- [       Thread-4] ationConfigEmbeddedWebApplicationContext : Closing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@6e5e91e4: startup date [Thu Nov 16 14:06:09 UTC 2017]; root of context hierarchy
2017-11-16 14:06:56.342  INFO 21565 --- [       Thread-4] o.s.j.e.a.AnnotationMBeanExporter        : Unregistering JMX-exposed beans on shutdown
2017-11-16 14:06:56.348  INFO 21565 --- [       Thread-4] j.LocalContainerEntityManagerFactoryBean : Closing JPA EntityManagerFactory for persistence unit 'default'
2017-11-16 14:06:56.351  INFO 21565 --- [       Thread-4] org.hibernate.tool.hbm2ddl.SchemaExport  : HHH000227: Running hbm2ddl schema export
2017-11-16 14:06:56.363  INFO 21565 --- [       Thread-4] org.hibernate.tool.hbm2ddl.SchemaExport  : HHH000230: Schema export complete

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